X1 x2 X3 X4 5x16x2 +4x3 +2x4 -X1 +x₂ +3x3 +2x4 = 4x₁ −5x₂ +7x3 +4x4 -3x₁ +3x₂ +9x3 +6x4 || 0 +s = = 0 5 5 15 +t

Q: Find the number of different ways that an instructor can choose 7 students from a class of 16…

A: No. of students in a class for field trip(n)=16No. of students that an instructor can choose(r)=7

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Q: Wribe all Ches Ay SINCh ihat 427 Exmplaira your anewer-

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A: 48